Enum feattle_core::HistoryError

pub enum HistoryError<PersistError: Error + Send + Sync + 'static> {
    UnknownKey(String),
    Persistence(PersistError),
}

The error type returned by Feattles::history()

Variants

UnknownKey(String)

The key is unknown

Persistence(PersistError)

Failed to load persisted state

Trait Implementations

impl<PersistError: Debug + Error + Send + Sync + 'static> Debug for HistoryError<PersistError>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<PersistError: Error + Send + Sync + 'static> Display for HistoryError<PersistError>

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<PersistError: Error + Send + Sync + 'static> Error for HistoryError<PersistError> where
    PersistError: Error + 'static,
    Self: Debug + Display, 

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting